Apparatus

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flight_takeoff Flight

UAL1644

Operated by United Airlines

Live map

Live map filtered to UAL1644. Shown when the flight is currently airborne.

Route airports View route page →

Departure

SJU TJSJ VFR

Luis Munoz Marin International Airport

San Juan, PR

Local time
06:03 AST
Timezone
America/Puerto_Rico
Type
Large Airport
Elevation
9 ft
Coordinates
18.4394, -66.0018

cloud Weather

Wind
130° / 3 kt
Visibility
9 SM
Ceiling
SCT 3,000 ft
Temp / Dew
26°C / 22°C
Altimeter
30.03 inHg

Obs: 2026-05-30T09:56:00.000Z

Raw METAR / TAF 
METAR TJSJ 300956Z 13003KT 9SM SCT030 26/22 A3003 RMK AO2 SLP169 HZ ALQDS T02560217 $

TAF TJSJ 300533Z 3006/3106 11007KT P6SM FEW025 FM301300 08015KT 6SM HZ FEW025 FM302300 10009KT 6SM HZ VCSH FEW025 SCT045

flight Live Traffic

flight_takeoff 48 Departures
flight_land 48 Arrivals

Arrival

IAH KIAH VFR

George Bush Intercontinental Airport

Houston, US

Local time
05:03 CDT
Timezone
America/Chicago
Type
Large Airport
Elevation
97 ft
Coordinates
29.9844, -95.3414

cloud Weather

Wind
160° / 4 kt
Visibility
10 SM
Ceiling
FEW 25,000 ft
Temp / Dew
23°C / 22°C
Altimeter
29.86 inHg

Obs: 2026-05-30T09:53:00.000Z

Raw METAR / TAF 
METAR KIAH 300953Z 16004KT 10SM FEW250 23/22 A2986 RMK AO2 SLP109 T02280222

TAF KIAH 300837Z 3009/3112 19005KT P6SM FEW045 BKN250 FM301100 VRB03KT P6SM SCT010 BKN028 FM301500 21006KT P6SM FEW015 SCT030 FM301800 17009KT P6SM SCT040 BKN250 FM310300 18006KT P6SM FEW030 BKN250 FM311000 00000KT P6SM BKN030

flight Live Traffic

flight_takeoff 160 Departures
flight_land 158 Arrivals

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-05-29 A2B7F5 SJU → IAH May 29, 13:10 UTCMay 29, 15:30 UTC2h 20m - -
2026-05-29 A2B7F5 SJU → IAH May 29, 11:25 UTCMay 29, 11:40 UTC15m - -
2026-05-28 A12AEB SJU → IAH May 28, 12:45 UTCMay 28, 15:05 UTC2h 20m - -
2026-05-28 A12AEB SJU → IAH May 28, 11:10 UTCMay 28, 11:20 UTC10m - -
2026-05-27 A4497F SJU → IAH May 27, 13:10 UTCMay 27, 15:30 UTC2h 20m - -
2026-05-27 A4497F SJU → IAH May 27, 11:35 UTCMay 27, 11:50 UTC15m - -
2026-05-26 A2B83B SJU → IAH May 26, 11:54 UTCMay 26, 15:35 UTC3h 40m - -
2026-05-26 A2B83B SJU → IAH May 26, 11:15 UTCMay 26, 11:24 UTC10m - -
2026-05-25 A448D3 SJU → IAH May 25, 12:55 UTCMay 25, 15:25 UTC2h 30m - -
2026-05-25 A448D3 SJU → IAH May 25, 11:15 UTCMay 25, 11:30 UTC15m - -
2026-05-24 AA7EBC SJU → IAH May 24, 11:05 UTCMay 24, 15:25 UTC4h 20m - -
2026-05-24 AA7EBC SJU → IAH May 24, 11:13 UTCMay 24, 15:22 UTC4h 9m +13m +12m
2026-05-23 AA7F2B SJU → IAH May 23, 11:05 UTCMay 23, 15:45 UTC4h 40m - -
2026-05-22 A448D1 SJU → IAH May 22, 13:55 UTCMay 22, 14:15 UTC20m - -
2026-05-22 A448D1 SJU → IAH May 22, 11:13 UTCMay 22, 15:45 UTC4h 32m +13m -10m
2026-05-22 A448D1 SJU → IAH May 22, 11:13 UTCMay 22, 15:47 UTC4h 34m +13m -8m
2026-05-21 A2BBF2 SJU → IAH May 21, 13:01 UTCMay 21, 15:35 UTC2h 35m - -
2026-05-21 A2BBF2 SJU → IAH May 21, 11:10 UTCMay 21, 11:30 UTC20m - -
2026-05-20 A2BBCC SJU → IAH May 20, 13:00 UTCMay 20, 15:50 UTC2h 50m - -
2026-05-20 A2BBCC SJU → IAH May 20, 11:15 UTCMay 20, 11:25 UTC10m - -
2026-05-20 A2BBCC SJU → IAH May 20, 11:13 UTCMay 20, 15:52 UTC4h 39m +13m +22m
2026-05-19 A12B2D SJU → IAH May 19, 13:00 UTCMay 19, 15:40 UTC2h 40m - -
2026-05-19 A12B2D SJU → IAH May 19, 11:15 UTCMay 19, 11:30 UTC15m - -
2026-05-19 A12B2D SJU → IAH May 19, 11:13 UTCMay 19, 15:34 UTC4h 21m +13m +5m
2026-05-18 A2BC5A SJU → IAH May 18, 12:55 UTCMay 18, 15:40 UTC2h 45m - -
2026-05-18 A2BC5A SJU → IAH May 18, 11:10 UTCMay 18, 11:20 UTC10m - -
2026-05-18 A2BC5A SJU → IAH May 18, 11:13 UTCMay 18, 15:36 UTC4h 23m +13m +7m
2026-05-17 A448F6 SJU → IAH May 17, 13:01 UTCMay 17, 15:45 UTC2h 45m - -
2026-05-17 A448F6 SJU → IAH May 17, 11:15 UTCMay 17, 11:25 UTC10m - -
2026-05-16 A12AE8 SJU → IAH May 16, 11:16 UTCMay 16, 15:40 UTC4h 25m - -

Performance history

Flights tracked
104 showing last 30
Avg arrival delay
+5m
On-time arrival
83% 83% on time
Aircraft used
14

Monthly activity 2 months

Month Flights tracked
May 2026 60
April 2026 44

UAL1644 frequently asked

Where does flight UAL1644 fly?
UAL1644 (United Airlines) flies from SJU to IAH. View the full route page.
How long is flight UAL1644?
Based on observed flights, UAL1644 takes on average 2h 19m from takeoff to landing.
How often does UAL1644 fly?
UAL1644 has been observed flying several times a week in our tracking data. We've recorded 104 flights under this callsign.
Is flight UAL1644 usually on time?
Across recent flights, UAL1644 arrives with an average 5-minute delay. 83% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL1644?
UAL1644 has been operated by 14 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL1644 live?
Yes. When UAL1644 is currently airborne, the live tracker map above shows its real-time position from ADS-B broadcasts. If the map is empty, the flight is not currently in the air.